package lab02.test32;

import java.util.HashMap;
import java.util.Map;

/**
 * Created by Administrator on 2017-11-9.
 */
public class Test {

    public static void main(String[] args) {


        Map<String, String> person = new HashMap<>();

        // id—>"1"、name—>"张三"、gender—>"男"、 age—>"25"、love—>"爱学Java"
        person.put("id", "1");
        person.put("name", "张三");
        person.put("gender", "男");
        person.put("age", "25");
        person.put("love", "爱学Java");

        // 遍历这个map
        for (Map.Entry<String, String> entry : person.entrySet()){

            System.out.println(entry.getKey() + ", " + entry.getValue());
        }


        System.out.println("map集合的大小是：" + person.size());


        // 删除key为age的记录
        for (Map.Entry<String, String> entry : person.entrySet()){

            if (entry.getKey().equals("age")){

                person.remove(entry.getKey());

            }
        }

        System.out.println("map集合的大小是： " + person.size());
    }
}
